From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753740AbbH0JQK (ORCPT ); Thu, 27 Aug 2015 05:16:10 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:46552 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753375AbbH0JOv (ORCPT ); Thu, 27 Aug 2015 05:14:51 -0400 From: Kishon Vijay Abraham I To: , , , , , , CC: , Subject: [PATCH v3 12/15] mmc: host: omap_hsmmc: enable/disable vmmc_aux regulator based on previous state Date: Thu, 27 Aug 2015 14:44:04 +0530 Message-ID: <1440666847-12594-13-git-send-email-kishon@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1440666847-12594-1-git-send-email-kishon@ti.com> References: <1440666847-12594-1-git-send-email-kishon@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org enable vmmc_aux regulator only if it is in disabled state and disable vmmc_aux regulator only if it is in enabled state. Signed-off-by: Kishon Vijay Abraham I Tested-by: Tony Lindgren --- drivers/mmc/host/omap_hsmmc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index cd4bd6d..5a5946a 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -184,6 +184,7 @@ struct omap_hsmmc_host { struct regulator *pbias; bool pbias_enabled; void __iomem *base; + int vqmmc_enabled; resource_size_t mapbase; spinlock_t irq_lock; /* Prevent races with irq handler */ unsigned int dma_len; @@ -249,6 +250,7 @@ static int omap_hsmmc_get_cover_state(struct device *dev) static int omap_hsmmc_enable_supply(struct mmc_host *mmc, int vdd) { int ret; + struct omap_hsmmc_host *host = mmc_priv(mmc); if (mmc->supply.vmmc) { ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); @@ -257,12 +259,13 @@ static int omap_hsmmc_enable_supply(struct mmc_host *mmc, int vdd) } /* Enable interface voltage rail, if needed */ - if (mmc->supply.vqmmc) { + if (mmc->supply.vqmmc && !host->vqmmc_enabled) { ret = regulator_enable(mmc->supply.vqmmc); if (ret) { dev_err(mmc_dev(mmc), "vmmc_aux reg enable failed\n"); goto err_vqmmc; } + host->vqmmc_enabled = 1; } return 0; @@ -278,13 +281,15 @@ static int omap_hsmmc_disable_supply(struct mmc_host *mmc) { int ret; int status; + struct omap_hsmmc_host *host = mmc_priv(mmc); - if (mmc->supply.vqmmc) { + if (mmc->supply.vqmmc && host->vqmmc_enabled) { ret = regulator_disable(mmc->supply.vqmmc); if (ret) { dev_err(mmc_dev(mmc), "vmmc_aux reg disable failed\n"); return ret; } + host->vqmmc_enabled = 0; } if (mmc->supply.vmmc) { @@ -2077,6 +2082,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev) host->power_mode = MMC_POWER_OFF; host->next_data.cookie = 1; host->pbias_enabled = 0; + host->vqmmc_enabled = 0; ret = omap_hsmmc_gpio_init(mmc, host, pdata); if (ret) -- 1.7.9.5